Vulnerability · Published Mar 3, 2022 · Assigned by GitHub_M

CVE-2022-24725Exposure of home directory through shescape on Unix with Bash

Medium 6.2

In plain English

A medium-severity information exposure in shescape from ericcornelissen. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.2Medium

Exploit odds (30 days)0.5%top 57.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Shescape is a shell escape package for JavaScript. An issue in versions 1.4.0 to 1.5.1 allows for exposure of the home directory on Unix systems when using Bash with the `escape` or `escapeAll` functions from the _shescape_ API with the `interpolation` option set to `true`. Other tested shells, Dash and Zsh, are not affected. Depending on how the output of _shescape_ is used, directory traversal may be possible in the application using _shescape_. The issue was patched in version 1.5.1. As a workaround, manually escape all instances of the tilde character (`~`) using `arg.replace(/~/g, "\\~")`.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	shescape	1.5.1	GHSA-446w-rrm4-r47f

Affected products (as reported)

Vendor	Product	Versions
ericcornelissen	shescape	>= 1.4.0, < 1.5.1

Weakness: CWE-200 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/ericcornelissen/shescape/security/advisories/GHSA-446w-rrm4-r47f x_refsource_CONFIRM
https://github.com/ericcornelissen/shescape/issues/169 x_refsource_MISC
https://github.com/ericcornelissen/shescape/pull/170 x_refsource_MISC